This 1971 Plymouth Duster began life as a six-cylinder coupe produced in Hamtramck, Michigan, and it was acquired by the seller in August 2013. The car was refurbished and modified by its previous owner in Colorado, and work is said to include refinishing the exterior in Plum Crazy, reupholstering the two-tone interior, and installation of a 440ci V8 paired with a TorqueFlite 727 automatic transmission. Additional modifications include 17″ wheels, interior updates, and front coilover suspension and…